Cannot resolve tsconfig paths

Question

My Angular 6 project with TypeScript version "2.7.2" has tsconfig.json as

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./src",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2017",
      "dom"
    ]
  },
  "paths":{
    "@services/*": ["app/services/*"] 
  }
 }

I tried importing a service using the above path

 import { AppService } from '@services/app.service';

But I'm getting this error on running ng serve

ERROR in src/app/app.module.ts(20,26): error TS2307: Cannot find module '@services/app.service'.

P.S.- Without the paths

import { AppService } from './services/app.service';

is working fine.

Answer 1

paths option is part of compilerOptions

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./src",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2017",
      "dom"
    ],
    "paths":{
      "@services/*": ["app/services/*"] 
    }
  },
 }